monothematic

From mono- +‎ theme +‎ -atic.

• (Received Pronunciation) IPA^(key): /ˌmɒ.nəʊ.θəˈmæ.tɪk/
• (General American, cot–caught merger) IPA^(key): [ˌmɑnoʊθəˈmæɾɪk]

monothematic (not comparable)

1. Dealing with only one theme or topic.

   Coordinate term: polythematic

   a monothematic delusion

2. (onomastics, of a name) Composed of a single traditional name element.

   Antonyms: deuterothematic, dithematic